Machine for forming split pins or cotter-pins.



I. J. YOUNG.

MACHINE FOR PORMING SPLIT PINS OR GUTTER PINS.

APPLICATION FILED AUG. 17, 1912.

Patented Aug. 11, 1914.

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I. J. YOUNG.

MACHINE FOR IORMING SPLIT PINS 0R GOTTEB. PINS'.

APPLICATION FILED AUG. 17, 1912. 1,106,484. Patented Aug. 11,1914.

BISHEBTS-SHEET 2.

Tilt; NORRIS PET'ERS CO., PHOTO-LITHO.. WASHINGTON. D. CA

I. J. YOUNG. MACHINE POR PORMING SPLIT PINS 0R GOTTBR PINS..

` APPLICATION FILED AUG.17, 1912. 1,106,484.

3 SHEETS-SHEET 3.

Patented Aug. 11, 1914.

THE NORRIS PETERS CO.. PHOTDJ-ITHD.. WASHINGTON. D. C.

Tni) sfrarns i IRA J. YOUNG, oFsT. LOUIsMIssoURI, AssrGNOR To wEsTERN WIRE PRODUCTS COMPANY, or sT. LOUIS, NilssoURLn` CORPORATION OF MIssOURI.

MACHINE FOR FORIVIING SPLIT PINS ORCOTTERPINS.

Specicaton of Letters Patent. Patnted Aug, 11 1914:.

y Application filed August 147, 1912. Serial No. 715,559.

To all whom) it mag/concern: i `Be itknown that I, IRA J. YOUNG, a citizen ofthe United States, residing at St. Louis, Missouri, have invented certain new and useful Improvements.V in Machines for Forming Split Pins or Cotter-Pins, of which the following isa full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates particularly to a `machinedesigned for cutting wire into sections` o-f uniform size and forming said sections into split pins or cotter pins, the same comprising a `pair of parallel legsunited at one end by a loop or eye, and the principal objects of my inventionare to provide a comparatively simple, inexpensive machine which can be Operated with littlepower, and to provide forming means which will readily produce a loop or eyel in the center of a length of wire andgwhichforming means also engages the wire immediately adjacent said loop or eye and exerts pressure thereon toform the necks `between the loop or eye and the legs, which 'pressure is equal on both sides, thereby forming a pin with a perfect eye and with parallel legs that lie immediately `adjacent eachother in order that the pin may be readily introduced into the pin hole or opening. i

Figure 1 is afront elevational view of my improved machine. Fig. 2 is a plan view of the machine, `with parts thereof broken away. Fig. 3 is an enlarged verticalsection taken on the line 33 of Fig. 1. Fig. 4 is a horizontal section taken on the line 4 4 of Fig. 1. Fig. 5Y is an enlarged section taken on the line of Fig. 4. Fig. 6 is an enlarged elevational view of the parts seen looking in the direction indicated by the arrow 6, Fig. 1. Fig. 7 is an elevational view Vof the forming means, with the cover plate thereof remo-ved.` Fig. 8 is an elevational view similar to Fig. 7, and showing the forming means engaging a section vof wire `toshape the same into a split pin.`

` Fig. 9. is a horizontal section takenv on the i driving shaft of the machine with a combined fly wheel and pulley 4, that 1s adapted to receive a driving belt (not shown). Fixed on the shaft 2 is a gear wheel 5 that meshes with a corresponding gear wheel G, which latter is fixed on the shaft 3. Fixed lon the front end of the shaft 2 1s an eccentric disk 7, and fixed on the front end of the shaft 3 is a disk 8 provided on its edge `with av pair of oppositely "disposedlugs 9.

The split pin forming means of my improved machine is located on the face of the plate 1 below the shaft 3, and said forming means includes a metal 4block 10 that is formed on or fixed to the plate 1. This block is provided in its front and rear faces with vertical grooves l1 through which operate parallel bars 12. Pivotally connected to the upper ends of these bars by means of a pin 13 is the lower end of a link 14, the upper end of which is provided` with a Slot 15 through which passes a wrist pin 16 that is seated in the disk 8. `Connected in any suitable Inanner to the pin 16 is the upper end of a retractile coil spring 17, the lower end of which is attached to the pinV 13. `The nor-7 mal tendency of this spring is to exert` an upward pull on the bars 12, thereby ele-vating the link V14 with'respect to the pin 16.` The lower ends of the bars 12 are connected in any suitable manner. Formed in the web of metal 18between the grooves 11 and extending upwardly from` the bottom of the block 10 is a vertically disposed slot 19, the upper end of which is rounded, as designated by 21, to form a seat for the eye of the split pin as the sameis formed, and the edges of this slot are grooved, as designated by 22, so as to properly hold the `wire of which the split `pin is formed as the same is drawn upwardly intothe former. `The underside of the block lOis provided with a shallow groove 10a that forms a seat for the length of wire fed into `position Vbeneathsaid block to be formed into the split pin. Formed through the block 10 and intersecting the grooves 11 and slot 19 is a horizontally disposed slot 23 in which operates a pair ofy forming fingers 24. Formed on the forward ends of-'thes'e fingers are vertically disposed tongues 25 thatare adapted to pass between the bars 12 and the front edges of these tongues are grooved vertically, as des- .ignated byv26,.so as to snugly fit thewire aTnN nnte.

and is equipped l fronti one of the bars l2 1s a bracket 28', provided With a pair of horizontally alined from which the split pins are formed. yThe slot 23 islocated so that the tongues o n the ffwad ends aff' the immaginare Opera.

, ing in said slot come' together immediately below the seat 21 which arrangement is essential in the formation of the eye of the s nlit pin? Qetachably Iixed on `tle front f ce' f the blockV 10 is plate 27 is formed a `vertically disposed slot 28 that coincides with the slot 19. VFixed on the bearings29, and. arranged to slidetherein is ,ferming pin' or. rodtSO. The-forward end o'ffjhispin passes-through a` suitably lo.- cajted aperture in the' front one of thebars 12,-a'nd engages ina corresponding recess located in .the rear one oi saidbars. Lo-

' catedon this pin between the bearings 29 is alfhlocki 3:1, the rear lower crnerof which is beveled or cut away as designated by 32. Gefinected toi the outer one dfth'e bearings 29' and; tof' the' head. ofnt'he pin V30. is a re-y tra'tile cci-'l springf, the normal t'ei'ideneyV periphery ofthe disk 8.; rlfhe lower endsof these levers are connected to rthe forming ingersf24:4 by means of links 38% and seated Viin-:the lower. ends ofsaid levers and bearing forming. fingers againstthe rearends ot said Connecting the are adjustable screws4 39.

' upper portions' of theleversE 88 is a retractile Y coil spring; 39?thatnormally holdsthe upper ends of said levers against the edge of the danse. n

Thle: mechanism for. severino` the wire into 'cfal sized lenth's will now be described.

i." `Air-ranged o'n'tlie front side of theplate 1 below afid to the right of theforming mechaiiism, is plate 4Q which i'shorizontally adinstable byy means". of screws 4:1 passing tl'otih slfots 42 iii said plate, and formed iith upper portion or'y this plate is 'a lug provided `with' an opening 44: through which the'wire" passes.i Located vo'n the upper left handfcorner'- of this :plate 40 is a' projecting" luffi provided onits underside Wirth' a- V-shap'ed clttingllig 4G: Arranged tdslide' vertically, in suitable) bearings on the rea namens of the plate 401s a bari it pre: vided' en its upper end with an inverted V` shaped cutting member 458 that operates .in coni-function" with the member 46 to cut the in which" lpper en'ds of which arecuived inwardly an beandirectly on the wire. Mounted V'on the eccentric disk 7 is a strep 4.9, and. adiustably Geneeted thereto by means; of aQ-nghmnda;1ef ,hafta- Serevv 5o a ylilik-"517, the'lowe end iof which is pivotally mounted on awrist pin carried by the bar 47,thus as tliedisk 7 rotates the `bar 47 is reciprcated vertically.

lTl'e means for intermittently fleedingkflor# i ward the 'wire' tobeV 'severed and formed into split pins includes va plate 52 that isar-v rangedto slide uponua pair. of horizontally disposed rods53 carriedvby lugslpi'ojicting fromsth'e :front side' ofgtlil'eplate. il, and ormedon the central portion of this `plate 52 is a horizontally disposed shcfulderl 55 against which the' wire engages during v'its feeding movement.'` Pivotallyfniotinted on y the plate 52 beneath thisshoulder is a spring held pawl 56;, thep'ont-'i of whichen'gages the wire to nieve the sa'me'for'wardly asthe plate 52, is moved* ltoward the yseveringand p forming mechanisms.` 'A ,vertically` disposed lever 57 is pivotally 'connected"A at :its upper.

end of thislever hasfa pin, and slot connecend tothe top oiyth'e" yplatel and vthe' lower j tion with the plate,v 52.` Fixed` on the `disk y 7f isY a, plate-58 and tadjiistably-mounted.. thereon is Va secondpla'te 59k `profvidejd.'with.

Mounted on zin-extension onthe:right"` hand end of nthe plate ilis alseries of wire straightening rollersl 63;A and located fon this extension tortheleft ofgsaidirollersisia lug l 61k over whichthe Wire travels" during :its forward feeding movement. @Positioned above this lug 64: is a spring held pawlf,l

l thefpoi'nt oit' which engages' the wireduring its travel over the lug tor hold said"wire against. 1reverse movement during `the movenent of the platfe`52towardtheright handi The operationV of lmy l.improved 'machine is as follows: A belt is applied tothe wheel 4e and as' the sameis drivenv simultaneous rotary motion is imparted .td the-shafts 2 and 3; As the disk 7 `'is rotated. lmotion is imparted to the plates 58 andV 59 and" by means of the link '61,?` swingingv motion is imparted to' the lever` `57. `Asia. result, ,the plate 52V is reciprocated upon` -the 'rods 53 and during vthe movement of thisi'plateA tee lio i ward the left hand the point of the pawlv 56 v i engages the wire heneaththe shoulder l and thus moves said wire toward the sever` ing and forming.A means. '.Duri'ng1this iicr` f ward feeding movement the' wi'rebeing fed lug. 43 passes into thelgroov'e'lO.a in thennderside of the plate 10, as shown in lEig. During this wire feeding in movement the bars 12 carrying the forming pin 30have` been at their lower limit of movement, as shown by dotted line a, Fig.- 6 Immediat'ely after the proper length of wire has been fed into position beneath the plate 10, the bars 12 and parts carried thereby are moved upward so that the forming pin 30 occupies a position immediately against the underside of the length of wire beneath the plate 410, as shown in Figsf and 7. During time the link 14 and bars 12 remain stationary and the spring 17 is being expanded.

During this stationary Vperiod of the form ing pinthe bar `47 carrying they cutting lug 48 is being elevated by the action of the disk 1 7 on the strap 49, and as said cutting lug reaches its upward limit of movement it engages the length of` wire against the oppositecutting lug 46, thus severing the wire andthe length or piece to be formed into a 3, split pin is held against the underside of the plate by the stationary forming pin `30. When the pin 16 reaches the upper end of the slot 15, the link 14, bars l2, and forming pin 30 will be moved upwardlyand as a result the length of wire will be bent double over the forming pin and in such condi` tion said length of. wire will be drawn upa ward through the slot 19 with lthe legs of said doubled length of wire engaging in the grooves 22. When the pin 30 reaches its upper limit of movement the center of` the length of wire occupies the seat 21 at the upper end of the slot 19, `and at this instant the lugs 9 on the disk 8 engage the` upper ends of the levers 38,-thereby moving said upper ends outwardly and consequently moving the lower ends `of said levers in.- wardly. The screws 39 seated in the lower ends of said levers bear directly against the outer ends of the` fingers 24, thereby forcing said fingers inwardly toward each other, and as a result the tongues 25 on the forward ends of said fingers engage `the legs of the length of wire held in the slot 19 and force said legs toward each other so that the inner faces of said legslie parallel with and immediately against each other, as seen in Fig. 8. The tongues 25 bear against those portions of the legs of the pin immediately adjacent vto the eye or loop around the 'forming pin, thus forming sharp well defined neck portions between the legs and eye. As the pressure imparted to the lingers 24 is practically equal and said fingers are positioned and operate Y directly opposite `each other, the result is the formation of a perfect split pin having `parallel legs that fit snugly against each other, a perfect eye, .and well formed abrupt shoulders between the legs and eye. Immediately after the lugs 9 leave the upper ends of the levers 38, the spring 39a draws the upper endsof the levers toward the disk 8, thus moving` the lower ends of saidlevers carrying the fingers 24 outwardly, and thus the forming tongues on said lingers are disengaged from the legs of the split pin just formed. The link 14 carrying the bars 12 `now `moves downwardly as the disk 8 continues to rotate, and thus the pin carrying the formed splitpinmoves downwardly through the slot 19. Immediately after the pin 30 has moved into a position below the plate 10, the beveled rear corner 32 of the block 31 engages the curved face 35 of the arm 34 and as the downward movement continues the block and pin carried thereby are moved outwardly through the bearings 29 to the `position shown by dotted lines a Fig. 6, thus withdrawing the forward end of the forming pin from the eye of the split pin and the latter is now free `to discharge into a suitable receptacle. ,j

A machine of my improved construction is veryy simple, can be operated with comparatively littlepower, andwvery rapidly performs the various operations necessary to form split pins. The screws 39 can be readilyadjusted so as to regulate the limit ofinward travelof the forming fingers. The length of the sections of wire to be formed into split pins canbe accurately regulated by adjusting the plate 40 toward or away from the forming means and by adjusting the plate 59 onthe plate 58 which regulates the distance of swinging movement of the arm 57, to which the feeding mechanism is attached. The groove 10a in the underside of the plate 10 forms a seat for the severed length of wire to be formed into the split pin and said groove coincides with the grooves 22 so thatthe legs of the split pin are held in true alinement as the severed length of wire is drawn upward into the slot 19.

j t will be readily understood that minor` changes in the size, form and construction of the various parts of my improved split pin machine may be made and substituted for those herein shown and described without departing from the spirit of my invention, the scope of which is set forth in the appended claims.

I claim- Y j 1. In a machine for forming split pins, a rigidly fixed slotted forming plate the underside of which is provided with a groove, means for feeding a predetermined section of wire into said groove, means for moving the section of wire into the slot in said plateand a pair of fingers arranged to sli'de Atlifrougliythe forming platevfor engagthe section yof wire to' bend the same tightly around theV lneansvvliich moves the seotio'i of Wire into the slot'7 In a machine for forlning split pins a rigidly' IiXed slotted forming platey in te underside' of which isv forrfied a Curve, means for feeding a predetermined length of Wire vinto' said groove, means fornioving' said sectiofrf of vvire'intojtli'eslot .in said plat-e, and a pair of forrning inem'p'ers .adapte/dito engage* said sectionvof vire vvliil'e in the slot and forni eyeltherein. p 3. inaoliine Jfor forming split pins, a rigidly fined slotted forming plateprovided in its underside ivitli a groove, nieans for feeding a" jpif'edeterlninedf section of Wire into said groove, a pin adapted to traverse said slot and move the sefo'tion'jof Wire therei'nto, yand means forengaging said section of ivire" with pressure toforn an eye around Hipn Y l t a a 4f In a pagane for forming Spia pins@ ri'gi 1y exea Sion-ted foi-ming plate provided 'in' its underside with a groove, means for feeding' a predetermined v seti'on of .Wire into said groove, a memloeradapted to' en'` gage' the seetion of vvire and move tli'e same into the slotl in tl'ief plate; afpai'r of forming ineinbers arranged-l4 to slide throu forming yplate itoward eachl other ior en` gaglng' .they section of wire to form` an eye around' the mentioned ineinloei"` and ineans `for actuating said forming nernloer.

f 5; In a machine for forlning pins, a rigidly 4:Fixed slotted forming plate provided in' its'nunders'ide with a groove, meansy for feeding' aA predetermined section of Wire into said goove,a pin adapted tol traverse the' slot in tlie plate andni'ove the seetion of lWire ytlierein'to, a pair. of forming fingers arranged to slide through the forming p'late and, adapted to engage the section oi" Wire with pressure to for'ln an eye around-tire pin, and` nieans' for effecting the ivithdraival of the pin from the'ey'."

16. In a inaol'ine for forming split pins, a slottedforiin'g plate provided iii itsl nnd'e'rside with a groove, means for feeding tl'i'e end portion of a le'ftli' of' vvie' into said groove, ineans, for ofutting ofi' that portion of the Wire ivliicli occupies the groove, rneans forjsue'eessively enga'ging tlie severed see! tions of vvire and Iioving the sanie into the 'y Sia ai ai@ plate', means Comprising a pair of foi-innig fingers arranged, slide through the forming plate and opleratilg with vthe Wire engaging means for forning an Vey'e in eachs'ection of W1re`. f

" 7. I n a'l machine for f rmi o n Spia pins,

a slotted groove plate provided in its" underside Witha groove,` for ifeed-y ing length of Wire into said forming means" for severlng' said length of Wire its underside with a l groove, "niean'sffor -wv'ith a groove',1neans for feeding a sec-l tion of Wire into said groove, a inovabl'e forniingnieinber adaptedto eng g the seel tion oi' 'ii'fire'and' ino've ,tlfe'saiueg into thev ai@ ,Severedseecns; adapted if@ successively engage the' sections of IWire Sie@ Je@ tadapt'ed to engage thesectionl offvvir and inove the' saine into the stationary' forining nieniber tobend saidlsectioneof Wire double, and' nieansarr'anged to slide` tlirouglifthe stationary `forming nien'ilo'er and' 'cooperating iithr the mveble fol-'Hime member Yfori for me in een eeeeid1-ofwife mund. Sad iivalleinenibe'r. l L g I a' mchinezfor forming split `pin l V- ix, \.-\d, IA" '45* .u

feeding a' section Yof" Wire into said groove, a movable orning member. adaptedfto the Section ofjivir'e land irfolveille Vsaine int-o tlie slot in,` itlief` plate, v Where-1 and" apairof oppositelydisposed forming i nienil'ners arranged to, slidethnlglrthe forni# elite @deflated to ,engagea-,the lees' ef,- tlie" `doubled `section of Wire' and forni .an eve around the inovalol'e forniing I nem'ber tlie vv re engaging ei'ifd'sof ivhioli slidin forni ing nien'ib'ers are groo V ed" to? provi@ Je' seais for Said vvire.- J, i I

i l1l. In maeliine for forming pinsga f slotted orriingplate lorovid'efd"y in its {inderslot in tlieplatewivheifeby said sect-ion of Wire ishb'ent doubleaa'pairgofjoppo'sitely difs- 'Z-' posed forming' Ineinbers' arranged to slide melig-1i the Slotted forming-fpm@ and adfmtl ed' to engage tlielegsof the d'oilbledseotion of Wire and forni aneye around the rnov'able forming vmember the Wire engaging ends of efi- Which sliding forming members are grooved to provide seats for said Wire, and means comprising a fixed slotted finger for eect- .ing the Withdrawal of the pin from the eye.

l2. In a machine of the class described, a slotted forming plate provided inits underside. Witha groove, 'means for feeding a forming' member into the slot in theplatetobend the severed section of Wire double, and means comprising a pair of forming fingers arranged to slide horizontally through the slotted forming plate and cooperating Withr said movable forming member for formingA an eye at the bent end of the section of Wire.

13. in a machine ofthe class described, a slotted forming plate, a forming pin adapted to engage a section of Wire and move the same into the slot in the plate to bend the section of Wire double, a pair of forming members arranged to slide horizontally through the slotted forming `plate and adapted to coperate With said pin to form eye at the bent end of the section of Wire, levers for `actuating the pairof orming members adjustable connections between said members and the forming members, and means for simultaneously actuatingsaid levers.

la. In a machine of the class described, a forming plate provided With a slot open at one end and provided With a seat at its closed end there being a groove formed in the underside of said forming plate, means for feeding a` section of Wire into said groove, a movable forming member adapted to engage the section of Wire and move the same through the slot to bend said section of Wire double and locatethe bent end in the seat at the end of the slot, and forming means comprising a pair of fingers arranged for sliding movement through the forming plate, Which iingers are adapted to enga e `the legs of the doubled section of Wire Wit pressure to form an eye around the movable forming member.

l5. In a machine of the class described, means for engaging a section of Wire and bending the same double, a portion of Which forming means is positioned betWeen the legs of the doubled section of Wire at the bent end thereof While said Wire is being bent, means comprising a pair of sliding forming lingers adapted to engage the legs of the bent section of Wire adjacent to the bent end thereof to form an eye around the interposed portion of the forming means, and means comprising a fixed slotted plate for vei'fecting the WithdraWal of the interposed portion o the forming means from the eye.

16. In a'machine for forming split pins, a slotted plate, the inner edges of the slot in said plate being grooved, there being a groove formed in the underside of t-he slotted plate, Which groove is adapted to receive a length of Wire to be Jformed into a split pin, means for moving a length of Wire into the slot in the plate and means for forming an eye in said length of Wire While the same is in the slot.

In testimony Whereof I hereunto alix my signature in the presence of tWo Witnesses, this 15th day of August, 1912.

IRA J. YOUNG.

Witnesses:

RUTH PETERSON, CHARLES B. YoDER.

Copies of this patent may be obtained for Ive cents each, by addressing the Commissioner of Patents,

t Washington, D. G. 

